<template>
    <div class="wrapper">
        <swiper :options="swiperOption" v-if="showSwiper">
            <swiper-slide class="swiper-item" v-for="item of list" :key="item.id" >
                <img class="swiper-img" :src="item.imgUrl"/>
            </swiper-slide>
            <div class="swiper-pagination"  slot="pagination"></div>
        </swiper>
    </div>
</template>

<script>
export default {
  name: 'HomeSwiper',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        // 循环
        loop: true,
        // 每张播放时长3秒，自动播放
        autoplay: 3000,
        // 滑动速度
        speed: 1000
      }
    }
  },
  computed: {
    showSwiper () {
      return this.list.length
    }
  }
}
</script>

<style lang="stylus" scoped>
// >>>穿透作用，因为swiper-pagination-bullet-active类在组件内部定义的，想要wrapper也能作用到，可以用>>>
    .wrapper >>>.swiper-pagination-bullet-active
        background #fff !important
    .wrapper
        overflow:hidden
        width 100%
        height:0
        padding-bottom:26.6666667%
        background :#ccc
        .swiper-item
            width: 100%
            .swiper-img
                width: 100%
</style>
